# Build recipe for libmad.
#
# Copyright (c) 2020 Matias Fonzo, <selk@dragora.org>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Exit immediately on any error
set -e

program=libmad
version=0.15.1b
release=1

# Define a category for the output of the package name
pkgcategory=libs

tarname=${program}-${version}.tar.gz

# Remote source(s)
fetch=https://downloads.sourceforge.net/project/mad/libmad/${version}/$tarname

description="
MPEG Audio Decoder.

MAD is a high-quality MPEG audio decoder.  It currently supports MPEG-1
and the MPEG-2 extension to lower sampling frequencies, as well as the
de facto MPEG 2.5 format.  All three audio layers: Layer I, Layer II, and
Layer III (i.e. MP3) are fully implemented.
"

homepage=https://www.underbit.com/products/mad/
license=GPLv2+

# Source documentation
docs="CHANGES COPYING COPYRIGHT CREDITS README TODO VERSION"
docsdir="${docdir}/${program}-${version}"

build()
{
    unpack "${tardir}/$tarname"

    cd "$srcdir"

    # Set sane permissions
    chmod -R u+w,go-w,a+rX-s .

    # Refresh old source with patches coming from Gentoo (thanks!)
    patch -Np1 -i "${worktree}/patches/libmad/libmad-0.15.1b-cflags.patch"
    patch -Np1 -i "${worktree}/patches/libmad/libmad-0.15.1b-cflags-O2.patch"
    patch -Np1 -i "${worktree}/patches/libmad/libmad-0.15.1b-gcc44-mips-h-constraint-removal.patch"
    patch -Np1 -i "${worktree}/patches/libmad/libmad-0.15.1b-CVE-2017-8372_CVE-2017-8373_CVE-2017-8374.patch"

    sed -e "s@AM_CONFIG_HEADER@AC_CONFIG_HEADERS@g" -i configure.ac
    touch NEWS AUTHORS ChangeLog
    autoreconf -vif

    ./configure CPPFLAGS="$QICPPFLAGS" CFLAGS="$QICFLAGS" LDFLAGS="$QILDFLAGS" \
     $configure_args \
     --libdir=/usr/lib${libSuffix} \
     --mandir=$mandir \
     --docdir=$docsdir \
     --enable-shared=yes \
     --enable-static=yes \
     --build="$(gcc -dumpmachine)"

    make -j${jobs} V=1
    make -j${jobs} DESTDIR="$destdir" install-strip

    # Provide pkg-config file
    mkdir -p "${destdir}/usr/lib${libSuffix}/pkgconfig"
    cat << "EOF" > "${destdir}/usr/lib${libSuffix}"/pkgconfig/mad.pc
prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: mad
Description: MPEG audio decoder
Requires:
Version: 0.15.1b
Libs: -L${libdir} -lmad -lm
Cflags: -I${includedir}
EOF

    # Compress and link man pages (if needed)
    if test -d "${destdir}/$mandir"
    then
        (
            cd "${destdir}/$mandir"
            find . -type f -exec lzip -9 {} +
            find . -type l | while read -r file
            do
                ln -sf "$(readlink -- "$file").lz" "${file}.lz"
                rm -- "$file"
            done
        )
    fi

    # Copy documentation
    mkdir -p "${destdir}/$docsdir"
    cp -p $docs "${destdir}/$docsdir"
}

